2003 yukon xl oil pressure gauge says 80

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by madralf, Jan 21, 2014.

  1. madralf

    madralf New Member

    So my oil pressure gauge has needle at almost 80
    Yesterday and now today check engine light is on coming into work. Can't check code till tomorrow.
  2. Pikey

    Pikey Moderator Staff Member 5+ Years ROTM Winner 5000 Posts

    it could be the stepper motor in the instrument cluster. But, check the code and let us know what it is.

    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    x2....on what Pikey has mentioned regarding the stepper motor.
  4. madralf

    madralf New Member

    OK just checked code.
    P0446 - evap ( evaporative emission system )
    Purge / vent. Solenoid circuit condition explanation
    The solenoids and system wiring are monitored for opens or shorts .

    Prop able cause

    1.Purge or vent solenoid defective.

    2. Check connector and wiring.

    3.fuel saturated vapor canister

    4. Failed evap vent solenoid.

    - - - Updated - - -

    I also just put 20.00 in 87 in tank on Monday evening. ? It was just below half when I put gas in.

    - - - Updated - - -

    OK so doing some research and came up with a thread from this forum and said to take the evap canister and blow it out. Sounds better. But still concerned on the oil pressure gauge. Checked the oil level and it was good and a good color

    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    Regarding the Stepper Motor for the Oil Gauge, it could be the Sending Unit or Bad Connection, or as mentioned by Pikey and myself it could be the Stepper Motor for your Oil Gauge has gone out/bad......I would lean towards this being the issue, as this is a Common Problem on the 2003" to 2006" Trucks/SUV's Dash Cluster's.......so much so, that Chevy/GM HAD a Special Coverage Adjustment for this Problem with the Stepper Motor's, but Coverage was good for only 7yrs or 70,000 miles,

    There are a couple of ways you could go in getting this Problem Fixed, there are company's that do this kind of repair, below are some of these Company's,


    http://www.ebay.com/itm/CUSTOM-TAHOE-GAUGE-CLUSTER-REPAIR-OE-STEPPER-MOTORS-ESCALADE-POINTERS-NEEDLES-/370911034528?pt=Motors_Car_Truck_Parts_Accessories &fits=Model%3ATahoe|Year%3A2003|Make%3AChevrolet&h ash=item565c053ca0&vxp=mtr

    Also if your good with doing the repair yourself, below is a Excellent Write-Up, Step by Step Instructions, W/Pictures, on Removing and Installing Stepper Motor's,

  6. madralf

    madralf New Member

    I put some seafoam in the engine and gas and see if that by chance clears the code. I will eventually clean the evap canister. When it warms above 25 here. My brother who is a huge gm lover and mechanic had same issue with code and cleared it with fuel cleaner

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